MAP/Barometric Pressure Circuit Range/Performance
What does this mean?
Code P0106 means the MAP sensor output voltage is outside the expected range for the current engine operating conditions.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Mitsubishi Lancer models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
Common Causes
Faulty MAP (Manifold Absolute Pressure) sensor
Vacuum leak in intake system
Intake manifold gasket leak
Dirty or faulty throttle body
Symptoms to Watch For
- Check Engine Light is illuminated
- Rough or unstable idle
- Poor acceleration or sluggish response
- Decreased fuel economy
- Engine surging or fluctuating RPM
How to Diagnose
Common Solutions
**Repair Vacuum Leaks:** The most frequent cause. Replace any cracked, brittle, or disconnected vacuum hoses, especially those leading to the MAP sensor, PCV system, or brake booster. Ensure all intake manifold gaskets are sealing properly.
**Replace Faulty Manifold Absolute Pressure (MAP) Sensor:** If the sensor's output is consistently out of range, erratic, or does not respond correctly to vacuum changes as observed during live data analysis and electrical testing, the sensor itself is likely defective.
**Repair/Replace Damaged Wiring or Connector:** Address any corrosion, frayed wires, or loose connections at the MAP sensor's electrical connector. A poor electrical connection can cause intermittent or incorrect signal readings.
**Clean Throttle Body and/or PCV System:** A heavily carbonized throttle body can restrict proper idle airflow and affect manifold vacuum. A clogged PCV valve or hose can also cause vacuum issues that directly influence MAP sensor readings.